Find differences between two Arrays of strings in PHP

array-differences.php

<?php

function findDifferences(array $array1, array $array2)
{
    // Elements present in array1 but not in array2
    $missingInArray2 = array_diff($array1, $array2);

    // Elements present in array2 but not in array1
    $addedInArray2 = array_diff($array2, $array1);

    // Elements common in both arrays
    $commonElements = array_intersect($array1, $array2);

    // Check for rearranged elements by comparing positions
    $rearrangedElements = [];
    foreach ($commonElements as $element) {
        $posArray1 = array_search($element, $array1);
        $posArray2 = array_search($element, $array2);
        if ($posArray1 !== $posArray2) {
            $rearrangedElements[$element] = [
                'from' => $posArray1,
                'to' => $posArray2
            ];
        }
    }

    return [
        'missing' => $missingInArray2,
        'added' => $addedInArray2,
        'rearranged' => $rearrangedElements
    ];
}